Oil treatment device



July 29, 1952 A. M. BRAUN OIL TREATMENT DEVICE Filed Aug. 18, 1948 1 V REATMENT DEYIQE -f" Anita Margot Braun,

Application August 18, 1948, Serial No. 44,829 In Canada September 26, 1947 1 Claim.

This invention relates to a device for renovating or reclaiming lubricating oil in internal combustion engines.

An object of the invention is to provide a device for insertion in the lubricating oil circuit of an engine and adapted to continuously receive afiow of oil, to filter the received oil, and to remove the readily volatile impurities therein by distributing the oil in a thin film over an extensive heated surface.

The invention will be described with reference to the accompanying drawing, in which The single figure is a sectional elevation of a device in accordance with the invention.

Referring to the figure, I is a cylindrical casing and 2 a cylindrical filter housing concentrically arranged within the casing with its walls in spaced relation to the walls of the casing. As shown, the housing 2 is supported by legs 3 extending upwardly from the bottom wall 4 of casmg I.

A perforated partition 5 is supported on an annular shoulder 6 within the housing 2 and spaced a short distance abov the bottom wall of the housing. Thus the space Within the latter is divided by the partition into an upper filter chamber 1 of major extent and a lower oil-receiving chamber 8 of minor extent. The chamber 1 is packed with a suitable filtering material 9. Oil from the oil circuit of an engine (not shown) is pumped into chamber 8 through an inlet I!) which extends through the bottom walls of casing I and housing 2. Preferably the partition member 5 is provided with an axial open-ended tubular extension H extending upwardly for a short distance into the filter chamber. The extension ll may be perforated as shown.

The top of housing 2 is provided with a perforated closure disc l4 having a convex upper surface and a concave lower surface.

Casing I has a restricted axial opening I3 provided with a perforated closure disc l2. A bolt I5 extends through disc l4 and has screwthreaded engagement with disc l2 to hold the closure discs l2 and id in place and to maintain the assembled casing and housing in rigid condition. A wingnut IE on bolt l5 permits ease of assembly and dissembly of the various elements of the structure. An oil outlet 11 is provided in the bottom wall of casing I, and leads to the crankcase of the engine.

In operation, hot used oil from the engine fiows into chamber 8 under pressure from the disc [4 it flows downwardly in a thin film on the outer surface of housing 2 in countercurrent flow to hot fumes rising from the hot oil in the engine crankcase through the outlet 1 1. Since the housing 2 becomes heated by the hot oil flowing through the same, the thin film of oil on the outer surface thereof is subjected to the combined heat of the incoming oil and the hot fumes from the crankcase which vaporizes gasoline, water and other impurities in the oil. The rising fumes entrain the vaporized impurities and emerge to the atmosphere through perforated disc [2. The treated oil flows back to the crankcas through outlet I7. Provision of the thin film of oil over a relatively great area permits a particularly effective heat treatment of the oil.

The device described may be employed in place i of or in conjunction with the usual breather cap on the oil-filling pipe of an engine, the outlet I! being connected to such pipe. Back pressure of the engine is released through perforated disc [2. To refill the crankcase with oil, it is merely necessary to remov disc l2 and pour fresh oil directly into casing I, from which it may fiow through outlet l1 into the crankcase.

What is claimed is:

A device for renovating the lubricating oil of an internal combustion engine comprising a vertically disposed casing having circular top and bottom walls and an imperforate cylindrical side wall, said top wall having an axial opening therein and being otherwise imperforate, said opening being substantially smaller than said top wall, a perforated closure disc removably secured in said opening, said bottom wall being provided with upwardly extending feet and having two openings therein and being otherwise imperforate, a filter housing having circular top and bottom walls and an imperforate cylindrical side wall positioned co-axially within said casing and resting on said feet, the walls of said housing being uniformly spaced apart from the corresponding walls of said casing, the top wall of said housing being dome shaped and perforated and of a size not greater than the external size of the cylindrical side wall of said housing, the bottom wall of said housing having an opening therein alined with one of the two openings in the bottom wall of said casing and being otherwise imperforate, a perforated circular partition supported within said housing at a substantial distance above the bottom wall thereof, filtering material filling the space within said housing enclosed by said perforated dome shapedtop wall, said perforated partitionf and :said imperforate cylindrical side wall, a conduit for oil to be renovated extending upwardly through one of said two openings in the bottom Wall of said casing and through said alined openin in the bottom wall of said REFERENCES CITED The following references are of record in the [file of this patent:

housing and opening into th space between the bottom wall of said housing and saidperforated UNITED STATES PATENTS Number Name Date 2,068,473 Sehwalge July 19, 1937 2,219,101 Finwall Oct. 22, 1940 -=:-.'::'2,289,553 -:1RO01; July 14, 1942 partition, and a conduit for hot gases and for1 

